Iowa Central / Minneapolis & St Louis 2-8-0 "Consolidation" Type Locomotives

Class H1-32 (Locobase 4383)

Shown in a mid-1930s diagram book on http://www.midiowa.com/warp9/0mstl26.jpg, these Belpaire-boilered Consolidation were delivered as compounds. 441 (ex-91, ex-401) was converted to simple expansion in 1911 and it's that locomotives data that shown in this entry.

Class H2-38 (Locobase 9026)

Data from M&StL 1934 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive collection. Works numbers included: 33453-33459 (June 1909), 35502-35505, 35555-35558, 35583-35584 (October 1910).

Superheater area is an estimate based on similar locomotives with identical setups. Steam admitted through 8"piston valves. Arch tubes contributed 22 sq ft to the firebox heating surface. A typical Consolidation, but with an unusual driver diameter.

Class H4-34 (Locobase 4384)

Originally built for the Iowa Central, this low-drivered class of Consolidation lasted only until the mid to late 1930s before retirement. They started with IC numbers 92-97. Later renumbered 402-407. They were apparently never superheated.

Data shown in a mid-1930s diagram book on http://www.midiowa.com/warp9/0mstl27.jpg,

Class H5-39 (Locobase 9027)

Data from M&StL 1934 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive collection. Superheater area is an estimate based on similar installations in other US locomotives.

Similar in most respects to the Baldwins supplied to the Iowa Central in 1911, Alco's engines had cylinders of 1" greater diameter. The firebox heating surface included 25 sq ft of arch tubes. In addition, the piston valves were quite a bit larger at 14" in diameter.

Class H6-38 (Locobase 9029)

Data from M&StL 1934 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive collection. Superheater area is an estimate based on similar installations in other US locomotives. Works numbers were 35622-35623, 35628 in November 1911; 35660-35663, 35700-35702 in December

Produced for the Iowa Central in the same year as those delivered to the Minneapolis & St Louis (which are described in Locobase 9026), these Consolidations were similar in many respects, but both the grate and firebox were larger. The firebox heating surface included 25 sq ft of arch tubes. In addition, the piston valves were quite a bit larger at 14" in diameter.

The IC engines were incorporated into the M & StL in January 1912 and renumbered 462-471.

471 was later sold to Wunder Klein & Donahue Company.

Specifications
Class	H1-32	H2-38	H4-34	H5-39	H6-38
Locobase ID	4383	9026	4384	9027	9029
Railroad	Minneapolis & St Louis (MSL)	Iowa Central (MSL)	Minneapolis & St Louis (MSL)	Minneapolis & St Louis (MSL)	Iowa Central (MSL)
Whyte	2-8-0	2-8-0	2-8-0	2-8-0	2-8-0
Road Numbers	440-441	500-06, 410-19/400-06, 70	442-447	450-461	420-429 / 462-471
Gauge	Std	Std	Std	Std	Std
Builder	Burnham, Williams & Co	Baldwin	Alco-Schenectady	Alco	Baldwin
Year	1898	1909	1902	1912	1909
Valve Gear	Stephenson	Walschaert	Stephenson	Walschaert	Walschaert
	Locomotive Length and Weight
Driver Wheelbase	15.09'	17'	16'	17'	17'
Engine Wheelbase	23.09'	25.67'	24'	25.67'	25.67'
Ratio of driving wheelbase to overall engine wheebase	0.65	0.66	0.67	0.66	0.66
Overall Wheelbase (engine & tender)	53.96'	56.33'	53.60'	55.96'	55.79'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers	151000 lbs	150000 lbs	146000 lbs	174000 lbs	171700 lbs
Engine Weight	165100 lbs	172000 lbs	166000 lbs	200000 lbs	200000 lbs
Tender Light Weight	105300 lbs	120000 lbs	105000 lbs	134000 lbs	123000 lbs
Total Engine and Tender Weight	270400 lbs	292000 lbs	271000 lbs	334000 lbs	323000 lbs
Tender Water Capacity	5000 gals	6500 gals	6000 gals	6500 gals	6500 gals
Tender Fuel Capacity (oil/coal)	9 tons	12 tons	8 tons	12 tons	12 tons
Minimum weight per yard of rail on which locomotive could run	62.92 lb rail	63 lb rail	60.83 lb rail	73 lb rail	72 lb rail
	Geometry Relating to Tractive Effort
Driver Diameter	55"	59"	55"	59"	59"
Boiler Pressure	180 psi	200 psi	190 psi	185 psi	200 psi
Cylinders (dia x stroke)	21" x 26"	21" x 30"	21" x 26"	22" x 30"	21" x 30"
Tractive Effort	31896 lbs	38120 lbs	33668 lbs	38699 lbs	38120 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort)	4.73	3.93	4.34	4.50	4.50
	Heating Ability
Firebox Area	198 sq. ft	170 sq. ft	274 sq. ft	206 sq. ft	206 sq. ft
Grate Area	32 sq. ft	42.30 sq. ft	34 sq. ft	49.50 sq. ft	49.50 sq. ft
Evaporative Heating Surface	1612	2025	2314	2130	2130
Superheating Surface		425		425	425
Combined Heating Surface	1612	2450	2314	2555	2555
Evaporative Heating Surface/Cylinder Volume	154.66	168.38	222.01	161.38	177.11
	Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation	5760	8460	6460	9158	9900
Same as above plus superheater percentage	5760	9898	6460	10714	11583
Same as above but substitute firebox area for grate area	35640	39780	52060	44589	48204
Power L1	4119.11	10956	6155.97	9627	11423
Power MT	240.56	644.10	371.82	487.91	586.68